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Letters Patent No. 86,7 51, dated February 9, 1869.

IIWIPROYEli-IE'NT IN STEM-WINDING- WATCH.

The Schedule referred to in these Letras Paten: and making part of thesame.

To all whom it may concern:

Be it known that I, VITALIS HIMMER, of Brooklyn, in the county of Kings, and State of New York, have invented anew and improved Stem-Winding Watch; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of this speciiication, in which- I Figure l represents a plan or face view of my improved watch.

Figure 2 is a detail face view of the drum.

' Figure 3 is a detail sectional view ofthe same, taken on the plane of the line :v x, tig. 2.

Figure 4 is a detail section, taken on the line 1/ y, iig. 1.

Similar letters oi' reference indicate corresponding parts.

The objectof this invention is to produce a stemwinding watch, which is so arranged that the spring cannot be overwound, and that if it is woundnp to the requisite limit, the gearing-connection between the drum and the stein will he automatically and effectually interrupted.

Heretoiore automatic disengaging-devices were ernployed by which the end ofthe spring was detached from the druin, but these invariably injured the spring, as, by such frequent abrupt stoppages, the repeated shocks either broke or spoiled the spring.

My invention consists more particularly in the use of a pin titted through the wheel that is mounted on the spindie of the main-spring, and in a iingered wheel resting upon and turning with the drum. During the revolution of the aforesaid spindle, while the ina-inspiing is being wound up, the pin is carried around and against. the iingers of the wheel on the drum, thereby turning said wheel. When the main-spring is wound np,the pin again strikes the fingered wheel, and travels up on an inclined edge formed thereon. .lt is thereby raised and pushesthe wheel that connects the spindle-wheel with the stem up out of gear,

so that the stein can be turned'at pleasure withoutA affecting the spring.

The invention consists, also, in a novel device for combining the winding and setting-apparatus.

A, in the drawing, represent-s the case cfa suitable watch.

B is the upper plateunder the dial.

C is the stein, carrying a crown or toothed wheel, a, which meshes into a wheel, b, that turns on a spindle projecting from the plate B.

D is an L-shaped spril'lg-plate, pivoted near one end, by a pin, c, to the plate B, a hook or proj ect-ion, d, being formed near its pivoted end.

'In the plate D are the bearings for a small toothed wheel, e, which meshes into the wheel b, and also into .a toothed wheel, j', that is mounted on the spindle, E,

of the main-spring, as indicated in iig. 3.

The non-pivoted end of the 'plate D rests on the wheel f, as shown.

A spring, g, serves to so hold the plate that the wheel c is kept in gear with b and f.

Fis an Lshaped or triangular frame pivoted, at h, to B, and carrying on its free end a toothed wheel, 4i.

It'has a hook, j, that rests over the hook, d, of the plate D, as in iig. 1.

G is a cam pivoted to the plate B, or to the case A, nea-1' the edge of the watch.

It has a projecting handle, by means of which it can be turned.

When this handle is turned out, the cam presses against the frame F, swinging the same around its pivot, h, so to throw the wheel 'i against the wheel l; on the minute-band spindle H, thereby producing a connection between the wheels I) and k, and allowing the setting of the watch.

The samemotion of the trarne F also serves, by bringing the hookj against the projection d, toswihg the plate l),`so as to carry the wheel c away from b audj, to disconnect the Winding-apparatus.

When the handle of the cani G is turned down again, as in iig. l, the frame F is, by means of a spring, l, brought back to its original position, in which the wheels i and k are disconnected, as shown, and at the same time the plate D is, by the action ot' the spring g, turned down so as to bring the wheels 11 c f into gear with each other. t

I is the drum, in which the main-spring of the watch is contained.

Upon its face is fitted a wheel, J, which has four (more or less) fingers, m, as shown in iig. 2.

L is a pin fitting loosely through the wheel f, so as to rest with its lower end upon the i'ace ofthe drum I, while its upper end is under the spring-plate D.

XVhile the watch is running, the wheel J is carried around with the drum, without having any effect upon the operation of the works; but when the watch is wound up, the pin L is carried around with the windin g-wheel f, and strikes once during every rev olution of the said wheel f, against the wheel J, or, rather, against one of its fingers. Thereby the wheel J is turned, and at the next revolution of f, the pin L strikes the next finger of J, Ste., until, when the spring is nearly or quite wound up, the pin L comes aga-inst an inclined edge, u,`o f the wheel J, as shown in iig. 2.

Being raised by ascending this incline, the pin also raises the end of the plate` D, and with it the wheel c, disengagiug thereby the latter froin b and f.

'lhe connection between the stein and spring is thus most eifectually interrupted, and the spring can never be injured or broken by overwinding.

To make the disengagement ofthe wheel e still more certain, the plate D is brought in contact with the head of a spring-pin, o.

This head is thicker on its upper than on its lower side, as indicated in tig. 4, and when the plate D is raised by the aforesaid action of thewheel'J and pin L, its edge sliding up on the inclined face of o, it is thrown aside by seid pin, so that the wheel e must be ,entirely out of gear.'

TWhen the wheel e is thus disengaged, thewateh continues to opera-te, the slow 'rotation of the drum pulling the wheel J from under the pin L, reinstating thereby all the parts in their original positions :md allowing the spring to. be again Wound up until the pin L is again raised.

The wheel f is prevented from turning in the wrong direction by means of pawls p p, as shown.

I claim as new, and desire to secure by Letters Patent- 1. The application of the pin L und fingered wheel J to the works of 'a stem-winding watch, for the purpose of -preventing overwnding of the same, as set forth.

2. The fingered wheel J, having the incline n and t-ted upon the drum I, in combination with the pin L, fitted through and turning with the winding-wheel j, spring-plate D, and wheel e, all made and operating substantially as herein shown and described.

3. The device set forth in the foregoing clause, in combination with the spring-pin o, for throwing the plate D :iside when it is raised, :is set forth.

.4. The swinging L-shztped plate D, having the wheel e and the hook in combination with the L-shaped or triangular swinging frame F, having the wheel 'i zuid the hookj,a.l1 arranged and opera-ting substantially as and for the purpose herein shown and described.

VITALIS HIMMER. Witnesses:

FRANK BLOGKLEY, ALEX. F. HIMMER. 

